diff --git a/syntax/mod.rs b/syntax/mod.rs
index 8c7e5ca..5b51648 100644
--- a/syntax/mod.rs
+++ b/syntax/mod.rs
@@ -50,6 +50,7 @@
     pub receiver: Option<Receiver>,
     pub args: Vec<Var>,
     pub ret: Option<Type>,
+    pub throws: bool,
     pub semi_token: Token![;],
 }